leo-rover/manuals: Fix step 5 of frame assembly (#35)

* Changed 2 images to remove confusion in step 5 of frame assembly

* Changed text in one of the notes in step 5 of frame assembly

Author: Manslaughter146

docs/leo-rover/manuals/frame-and-suspension.mdx

@@ -591,7 +591,7 @@ move without excess play and resistance.
 There is a barely visible <span style={{color : "red",}} > **scratch** </span>
 made on one of the sides of the suspension beam.\
 Make sure that <span style={{color : "#609ebe",}} > **wheel mounts** </span>
-face away from the scratch and are aligned to the ends of the beam.
+face away from the middle of the beam and are aligned to the ends of it.
 
 :::